Microstructure evolution and strength response of ultrafine grain medium carbon steel processed by higher pressure
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26316919%3A_____%2F10%3A%230000218" target="_blank" >RIV/26316919:_____/10:#0000218 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Microstructure evolution and strength response of ultrafine grain medium carbon steel processed by higher pressure
Original language description
High pressure torsion (HPT) deformation method at increased temperature of 400°C with varying strain was applied to refine ferrite-pearlite microstructure of the medium carbon steel (AISI 1045). The shear stress evolution during deformation and measurement of the torque were recorded and related to structure development and mechanical strength. The transmission electron microscopy (TEM) was employed to characterize microstructure development. Experienced lower strain the structure at disc periphery andin the disc centre showed the heterogeneity in ultrafine grain structure development. With further strain increase, equilibrium between the refinement of coarse phases and new grains restoration processes led to saturation of the grain refinement process. Upon tensile properties testing, the yield strength and ultimate strength increased with increasing equivalent strain (?eq) and only short region of strain hardening period prior failure appeared, regardless the strain applied.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JG - Metallurgy, metal materials
OECD FORD branch
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Result continuities
Project
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Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Physics: Conference Series 240 (2010) 012131
ISSN
1742-6596
e-ISSN
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Volume of the periodical
240
Issue of the periodical within the volume
1
Country of publishing house
GB - UNITED KINGDOM
Number of pages
4
Pages from-to
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UT code for WoS article
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EID of the result in the Scopus database
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